I usually come to this place to pick up used video games or to try to trade in my stuff for something new. They will offer it at a significantly cheaper price than retail for used games AND they will give you more in-store credit than places like EB or Gamestop. It does smell like a backed-up washroom in here (it has, for a number of years) but it's not like you are going to stay here for long. That is the only downside of the place.
I agree with what the other people say in terms of friendly service and the ability to haggle. However, I often don't as the guy will give me a discount just because he recognizes me. Great place for video games! Highly recommended.